DEVICE AND METHOD FOR ESTIMATING THE AMOUNT OF ALCOHOL CONTAINED IN THE FUEL OF AN ENGINE

摘要

The invention relates to a device for estimating the amount of alcohol contained in the fuel supplying a spark ignition internal combustion engine (1), characterised in that it includes a sensor (8) for measuring a parameter relating to the rotation of the engine, means for controlling the injection of different amounts of fuel into at least two cylinders (1a) of the engine and means (7) for determining the engine torque variation resulting from said injection operations, on the basis of measurements supplied by the sensor.